# Questions Asked onNovember 30, 2016

1. ## Chemistry

Answer the questions about the following reaction. 4Al(s) + 3O2(g) 2Al2O3 (s) How many molecules of O2 are used in the reaction? How many oxygen atoms are required? How many moles of Al2O3 are formed? What is the mole ratio of Al to O2?

2. ## Language Arts

1. What is the key to an effective search for information as you prepare for your presentation? (1 point) A. Prewriting B. Strong research skills C. Paraphrasing D. Drawing conclusions 2. Why would a website that is selling a service not be a credible

3. ## physics

the speed of the train increased from 15 mi/hr to 25 mi/hr in distance of 500 ft. calculate the average acceleration in ft/s^2

4. ## cal

the height of a rectangular box is 10 in. Its length increases at the rate of 2 in/sec.;its width decreases at the rate of 4 in/sec. When the length is 8 in and the width is 6 in, the volume of the box is changing in cubic inches per second at the rate of

5. ## math

Town P is on bearing 315 degree from town Q. While town R is south of town P and west of town Q. If town R is 60km away from Q, how fara is R from P?

6. ## Algebra

The equation h= -16t^2 + 32t + 9 gives the height of a ball, h, in feet above the ground,at t seconds after the ball is thrown upward.How many seconds after the ball is thrown will it reach its maximum height? What is its maximum height?

7. ## Science

which of the following statements is true as the moon goes from new moon to full moon phase? (2 points) A:We see more of the lighted side of the moon B:We see less of the lighted side of the moon C:The time it takes to go from new moon to full moon is 2

8. ## Calculus 1

If each edge of a cube is increasing at the constant rate of 4 cm/s. How fast is the volume of the cube increasing when the length x of an edge is 11 cm long?

9. ## calc

When the height of a cylinder is 12 cm and the radius is 4 cm, the circumference of the cylinder is increasing at a rate of pie/4 cm/m in, and the height of the cylinder is increasing four times faster than the radius. How fast is the volume of the

10. ## Maths

the points A,B,C and D lie on a straight line. The ratio of the length of AB to the length of BC is 3:4 and the ratio of the length of AC to the length of CD is 2:1. Find the ratio of the length of BC to the length of AD ?

11. ## Science

It takes a force of 22 N to push a 10 kg box horizontally with a constant velocity over concrete. What is the coefficient of kinetic friction between the box and the concrete? My guess is 10 kg/22 N = 0.4545 but I'm not sure if you have to take in account

12. ## math

The gradient of one of the line of ax2+2hxy+by2=0 is twice that of the other,show that 8h2=9ab

13. ## Algebra 1 B

2. How is the graph of y = -6x^2 + 4 different from the graph y = -6x^2? A. It is shifted 4 units to the left. B. It is shifted 4 unites to the right C. It is shifted 4 units up. *** D.It is shifted 4 units down. 3. A model rocket is launched into a large

14. ## Calculus

If f(x) is differentiable for the closed interval [−1, 4] such that f(−1) = −3 and f(4) = 12, then there exists a value c, −1< c < 4 such that a)f'(c)=3 b)f'(c)=0 C)f(c)=-15 d)f(c)=3 I understand that you are supposed to use the mean value theorem,

15. ## Statistics

The mean height of a certain kind of plant is 185 centimeters. Suppose we want to carry out a hypothesis test to see if the mean height when these plants are treated with a certain chemical differs from 185. State the null hypothesis H0 and the alternative

16. ## social studies - WW1

in 1914, which neutral nations joined allies later? Also, which neutral nations joined central powers later? Why would Germany worry about the alliance between France and Russia? Based on the map, which alliance had a greater advantage in 1914? Explain

stephanie ran 1 lap in 6 minutes. At this rate how far would she run in 30 minutes?

18. ## English

Which of the following is a true statement about an MLA Works Cited page? A. The Works Cited page requires no special formatting. B. The Works Cited page should immediately follow the conclusion and be on the same page. C. The Works Cited page should

19. ## Social studies

which of the following is not an element of culture? A. language B. customs C. age** D. dress

20. ## Math

B) Noralie used 22 Gallons of Gas to go 682 miles. 1)What are the two unit rates that she might compute? 2)Compute each unit rate and tell what it means. 3) Which way is the most useful? Why?

21. ## Math Check

Which nonterminating decimal can be converted into a rational number? 0.818118111... 0.020304050... 0.010110111... 0.321321321... *** George has a square sandbox in the backyard. The sandbox has an area of 160 square feet. To the nearest foot, what is the

22. ## cal

if f(x)= 4x^3-21x^2+36x-4, then the graph of f is decreasing and concave up on the interval(?,?)

23. ## world geography

The results of the Cold War included all of the following except_

24. ## math algebra

the product of two consecutive even numbers is 440. What is the sum of the numbers?

25. ## Physics

a 60-kg ice skater holds up a large sheet of cardboard that can catch the wind and drive her (frictionlessly) across the ice. while she's moving at 0.5m/s, a wind that is constant and horizontal for 5.0s exerts a forward force on the cardboard of 2.0 n.

26. ## physics

A 4.0 kg, 36-cm-diameter metal disk, initially at rest, can rotate on an axle along its axis. A steady 5.5 N tangential force is applied to the edge of the disk. What is the disk's angular velocity, in rpm, 4.0 s later?

27. ## Physics

Light of wavelength 469 nm passes through a slit, creating a diffraction pattern on a screen. The angular separation between the first diffraction minima on either side of the central maximum is 6.0∘ . Determine the width of the slit. I used this

28. ## Algebra

Suppose a parabola has an axis of symmetry at x = -2, a minimum height at -6, and passes through the point (0, 10). Write the equation of the parabola in vertex form.

if the 2nd term and the 4th term of an arithmetic progression are 15 and 23 respectively, find the first term and the common difference

30. ## English

Which of the following is a true statement about an MLA Works Cited page? A. The Works Cited page requires no special formatting. B. The Works Cited page should immediately follow the conclusion and be on the same page. C. The Works Cited page should

31. ## Algebra 2

Complex numbers are written in the form a + bi. What does i represent? -1 0 1 sqrt-1 **my choice

32. ## physic

what form of energy can be coverted from sound to light?

33. ## math

If you wanted to reduce the 8 by 6 rectangle by a ratio of 1/4, what would the dimensions of the new rectangle be?

34. ## History

7. Which philosophy did Tang rulers apply to govern their empire? A. Buddhism B. Confucianism C. Daoism D. Hinduism I think the answer is D. but Im not sure.

35. ## Algebra

Find the sum: 8 over sigma symbol, k=1 below the symbol and (-1)^k+1,5k to the right of it. Sorry the format is off, but I didnt know how else to type it in. Thank you.

36. ## Math

A fish bowl is constructed out of a spherical bowl with diameter 20cm. The bowl was initially empty and water flows into the bowl at a rate of 10cm^3/s. Let V and h be the volume and depth of water in the bowl at time t seconds respectively. Find dh/dt

37. ## History

Many people believe that the Civil War is considered to be the worst war in American history. What is the basis for this belief and do you agree or disagree with this statement?

38. ## VU

A man spends 2/7 of his income on food and 3/7on clothing. If he still saves Rs. 500, what is his total income?

39. ## Math

I am an odd number I am less than 100 The sum of my digits is 12 What am I

A banner needs to be enlarged from its original format. The dimensions of the original are 4 cm tall by 25cm wide. The enlarged banner needs to be at least 8 m wide but no more than 1.4 m tall. Calculate the minimum and maximum ratios of enlargement

41. ## science

A ray of light travelling in air strike the water surface at an angle of 40° calculate the refractive index of water if angle of refraction is 29°

42. ## consumers math

Sam Sounds received a \$290 discount loan to purchase a stereo. The loan was offered at 16% for 90 days. Find the interest in dollars and the proceeds for the following problem.

43. ## Math

Laura bought 24 pounds of sugar for \$10. How many dollars did she pay per pound of sugar? If necessary, round your answers to the nearest hundredth. >> I got the answer 0.41 or 2.4. It says it is wrong.

44. ## Algebra

A physics student stands at the top of a hill that has an elevation of 37 meters. He throws a rock and it goes up into the air and then falls back past him and lands on the ground below. The path of the rock can be modeled by the equation y = -0.02x^2 +

45. ## Physics

A container is filled to a depth of 20cm with water. on top of the water floats a 30.0 cm thick layer of oil with specific gravity of 0.700, what is the absolute pressure at the bottom? Please help!

46. ## Chemistry

A 26.3 gram sample of solid potassium chlorate decomposed and produced 9.45 grams of oxygen gas. What is the percent yield of oxygen?

47. ## Chemistry 1

What theoretical mass of MgO is produced if 0.150 g Mg3N2 is produced by strongly heating a 2.000 g sample of Mg in air?

48. ## Chemistry

one mole of ethanol releases 326.7 calories of energy during combustion. how many calories kilojoules are released? thank you ! :)

49. ## math

the 54th term and 4th term of an A.P are -61 and 64 respectively.Find the common difference and 23rd tem

50. ## Math

Angela is twice as old as clara. Seven years ago, the sum of their ages was 16. How old is clara now?

51. ## Math

1.The difference of a number and sixteen A.n + 16 B.n - 16 C.16n*** D.n/16

52. ## math

I have ten,ones and tenths.My digits are next door numbers and they add up to 9. What number am I?

53. ## Math

carlos can throw a ball 14 yards . His friend raul can throw 3/7 of that distance. Is rauls throw longer or shorter than 14 yards? Now find the exact length of Raul's throw.

54. ## english

It's permissible to delete a word or phrase from a direct quotation as long as you don't change the meaning of the quote. To indicate your deletion in the quote, you would A. use a hyphen in place of the deleted word or passage. B. use an ellipsis to

55. ## Math

The sequence a(1), a(2), a(3),...,a(n-1), a(n) is such that a(r)= 7r-3. Show that 1/[√a(r) - √a(r+1)] = k[√(7r-3) - √(7r+4)]. The numbers/letters in brackets are subscript.

56. ## precalculus

please check my answers 1.Use Gaussian elimination to write the system of equations given below in row-echelon form. 2x+4y+z=-4 2x-4y+6z=13 4x-2y+z=6 answer:2x+4y+z=-4 8y-5z=-17 z=1 2.Find the solution to the system of equations given below. x+y+z=2

57. ## Physics

A 50-kg ice skater moves around a bend at 8 m/s. The radius of the bend is 8 m. Centripetal force is provided by friction between the blade of the skates and the ice. What is the amount of centripetal force?

58. ## science

The apparent weight of cube in liquid with relatibe density 0.9

59. ## Calculus

For which pair of functions f(x) and g(x) below will the lim(x->infinity) f(x)g(x)≠0 a)f(x) = 10x + e^-x; g(x) = (1/5x) b)f(x) = x^2; g(x) = e^-4x c)f(x) = (Lnx)^3; g(x) = 1/x d)f(x) = √x; g(x) = e^-x

60. ## Calculus

Consider the function f(x) = {0, x = 0 and 1 - x, 0

61. ## Math

In a circus a tightrope is stretched from the top of a 10 ft. pole to the top of a 25 ft pole. The poles are 36 feet apart and vertical. How long is the tightrope? Show your work.

62. ## Science

Sperm and eggs are found in different parts of plant. Explain why it is important for these cells to unite and describe some factors in a environment that help unite them?

63. ## Chemistry

Ch3-ch2-c'ch3,ch2'ch3-ch2-ch3

64. ## Chemistry

Calculate the equilibrium constant 2SO2(g]+O2(g]⇌2SO3(g] given equilibrium constant of SO2,O2,SO3 are 0.3m,0.14,1.45 respectively wt happens to the equilibrium constant a) if so2 is added b)if o2 is removed

65. ## Math

A rectangular playground has an area of 2,996 square yards.if the width of the rectangle is 28,what is the length? Part#1 What is the area of the rectangle in square feet? Part#2

66. ## maths

2 . Put the following macroeconomic model into matrix format using Y, C and T as the variables and find the determinant of the matrix of coefficients. There is no need to solve the equations. Y = C + I C = a + b (Y – T) T = tY Kindly help me with

67. ## Math

2tan^-1(tanx/2×tan(π/4-y/2))=tan^-1(sinx×siny/cosx+cosy)

68. ## Math

Find the integral ∫(x^2-6x+1)/(x^2+1) dx

69. ## computer programming

Write a c++ code to vertically mirror an image.

70. ## Math

What does it mean for an equation to be balanced and why must you keep an equation in balance? Can someone explain in there own words please

71. ## Physics

During an adiabatic process, the temperature of 6.50 moles of a monatomic ideal gas drops from 525 °C to 169 °C. What is the work done? Here is my work, is it correct? T1 = 525+273 = 798 K T2 = 169 + 273 = 442 K work done = R[T2-T1]/1-gamma = 8.314[525 -

72. ## chemistry

In an adiabatic coffee cup, a 75mL of 1.0M HCl and 50mL of 1.0M HaOH were neutralize. The initial temperature is 22.1 C and the final temperature is 26.3 C. What is the enthalpy? S=4.18g/JC and the heat capacity of the adiabatic coffee

73. ## chemistry

9.25% KCl solution is prepared by dissolving enough of the salt to give 100.0 g of solution. What is the mass of water required?

74. ## value

A Biased Coin Is Such That The Head Is 4 Times More Likely To Show Up Than The Tail.What Is The Probability Of Obtaining A Head?

75. ## Math

Julio walks 3 1/2 miles in 1 1/4 hours

76. ## English

Ok so for my class I have to write about an issue that is found in multiculture literature. I can't think of any ideas of an issue that is important to me that i would like to write about.

77. ## Calculus MATH

Problem statement a) Suppose f(x) is defined on 0 ≤ x ≤ 1 by the following rule: f(x) is the first digit in the decimal expansion for x. For example, f(1/2) = 5 and f(0.719) = 7. Sketch the graph of y = f(x) on the unit interval with appropriate scales

78. ## Physics

A ship is heading north at 15km/h in a tide moving at 6km/h westward. Determine the magnitude and direction of the resultant velocity of the ship.

79. ## science

I'm stuck on the following questions 1)The geocentric model of the universe states that the Earth is the center of the universe. This is an example of a A)scientific conclusion B)pseudoscience C)scientific law*** D)Scientific method Through process of

80. ## college

Provide a numerical example to illustrate the effect of double entry book keeping on transaction.

81. ## Math

I am anumber greter than 10 but smaller than 40.I am a factor of 56 but not amultiple of 4

82. ## science

most of the life of a cell is spent in a period of growth and development called_____.

83. ## physics

A ship us heading north at 15 km/h in a tide moving at 6 km/h west ward. Determine the magnitude and direction of the resultant velocity of the ship.

84. ## cal

find dy/dx implicitly, given x^3+y^3=3xy

85. ## Math

When a number is a multiple of 6,what are the possible values for the ones digit?

86. ## math

Zach is planning to invest up to \$50,000 in corporate and municipal bonds. The lest he will invest in corporate bonds is \$6000 and he does not want to invest more than \$27,000 in corporate bonds. He also does not want to invest more than \$34,650 in

87. ## math

Mileys music has a sale on music cds. All music Cds are discounTed 15%. mariana's receipt indicates that she saved \$3 on her cd purchase. What is the full price of her music cd before discount

88. ## social studies

what was the effect of the Khmer farmers'surplus? 1) they bought more slaves 2) they earned great wealth 3) they enjoyed rainwater all the time 4) they explored the Pacific Ocean #2 ?

89. ## Algebra

A grocery store makes a 20-pound mixture of almonds and cashew nuts. The store charges \$4 per pound for almonds and \$5.50 per pound for cashews. The total value of the mixture is \$92. Write a system to find how many pounds of each type of nut are in the

90. ## Pre-Calculus

Which is the best example of the use of parametric equations? A. Measuring weight on the moon. B. Finding the position of a person in a city. C. Determining the position of a satellite during a specific time of day. D. Finding the right parameters to use

91. ## Calculus 1

Water is flowing into a vertical cylindrical tank of diameter 4 m at the rate of 2 m3/min. Find the rate at which the depth of the water is rising. (Round your answer to three decimal places.)

92. ## Accounting

Herring Wholesale Company has a defined benefit pension plan. On January 1, 2016, the following pension related data were available: (\$ in 000s) Net gain–AOCI \$ 350 Accumulated benefit obligation 3,170 Projected benefit obligation 3,200 Fair value of

93. ## social studies

What contributed to the growth of Japan's economy following WW2? 1)a decrease of exported goods 2) new factories with modern technology 3) a poorly educated workforce 4) fewer loans being given to businesses

94. ## cal

find the equation for the tangent line g(x)=x-1/2x+4 at x=-1

95. ## Algebra 1

3x + y = -11 6x - 2y = -2

96. ## Calculus

Find all values of c that satisfy the Mean Value Theorem for f(x) = x^3 + 1 on [2, 4].

97. ## English

I taught (thinking to myself not sure if it’s the right word taught) to myself that I needed to be fluent in programming languages to set myself apart from others in the job market and increase my quantitative skills. Is the proper word "taught" used

98. ## Math - Aglebra One (Ratios)

my grandfather has a huge coin collection of silver dollars and 50-cent pieces. He promised to give one fourth if his collection to the first of his grandchildren who can figure put the total value of his coins. The only cares he will give are these: There

99. ## CHEM 1301

A sample of propane, C3H8, contains 12.2 moles of carbon atoms. How many total moles of atoms does the sample contain?

100. ## social studies

how would the Philippine government respond to an insurgency? 1) government would try to work with their members 2) government would support it 3) government would ignore it 4) government would fight it fiercely

ratio 1/3

102. ## Algebra

A gardener is making a planting in the shape of a trapezoid. It will have 41 plants in the front​ row, 37 in the second​ row, 33 in the third​ row, and so on. If the pattern is​ consistent, how many plants will there be in the last​ row? How many

103. ## Pre-Calculus

Which are examples of the use of parametric equations? A. Position of a person on a ferris wheel. B. Position of a ball after being thrown. C. A and B D. Neither A nor B

104. ## social studies

How does the climate of Southeast Asia vary among regions? 1) mainland is much hotter that the islands 2) mainland receives monsoons but islands do not 3) islands are generally wetter than the mainland 4) islands have a subtropical climate but the mainland

105. ## cal

Monthly sales, in thousands, of a new laptop computer grow according to the model N(t)=4.7te^-0.3t where t is the number after introduction. Determine the point of diminishing returns and interpret your answer.

106. ## English

has anyone read the short story "the new veterans" and can give me like a summary of what happened in the story? i already tried looking online but couldn't find a complete summary? i just need to know mainly the plot? it would be much help

107. ## Algebra

The length of a rectangle is 2 ft less than three times the width. The area is 60 ft SQUARED. Find the length of the rectangle

108. ## Math

Expand (3+i)^5, where i^2=-1 (3+i)^5=? Please and thanks.

109. ## Physics

An object is 3 cm tall is placed 24 cm from a converging lens.a real image is formed 8 cm from the lens.the focal length of the lens is

110. ## math

Kofi and Ama both receive 50,000 dollars annually in the companies they work for. In Kofi's company, the mean annual salary of 60,000 dollars with a standard deviation of 5,000 dollars. Ama's company on the other hand has a mean annual salary of 35,000

111. ## physics

A ball is rolled off a table that is 1.25 meters tall and lands on the ground 0.48 meters away. If it took 0.505 seconds for the ball to land, what was the horizontal velocity of the ball? Record your answer to the nearest hundreth m/s (You do not need

112. ## Chemistry

Arrange the following from LOWEST to HIGHEST number of particles per L of solution: .1m Na3PO4 .1m C2H5OH .01m CO2 .15m NaCL .2m CaCl2

113. ## physics

An object is projected at an angle of elevation of 45 degree with a velocity of 100m/s. Calculate it's range

114. ## Math

If i rent a boat for 3.5 hours and the cost for 3 hours is 41 dollars and i split the cost with my friend how much will each person pay for the cost

115. ## Algebra

(3x-2)(3x+)-(x-4)square.

116. ## MATH

3xy-ysquare=2 and 2x -3y=-4

117. ## Math 6A unit test

What is the value of the blank in this question? 6/5 divided by ______ = 6

118. ## pre calculus

can you check this question? An object moving vertically is at the given heights at the specified times. Find the position equation s = at^2 + v0t + s0 for the object given the following conditions. •At t = 1 seconds, s = 48 feet •At t = 2 seconds, s =

119. ## precalculus

Can you check my answer? If it is wrong can you please explain why and give the correct answer? Use Gaussian elimination to write the system of equations given below in row-echelon form. 2x+4y+z=-4 2x-4y+6z=13 4x-2y+z=6 answer:2x+4y+z=-4 8y-5z=-17 z=1

Allison earns a \$40,000 base salary plus a commission equal to 15% of her total sales. What expression represents what she earns in total? I think it is : 40,000 + 0.15s thank you

121. ## Math

Let y=e^(cos^-1x) for modx

122. ## Math

How do you find the missing number? 4/5 > 2/x

123. ## Math (Geometry)

Linerar Equations Hourly rate of \$8.00 an hour for a guaranteed 40 hours

124. ## Math

Two consecutive angles of a parallelogram measures (X+35) and (5X-21) respectively determine the measures of each angle in the parallelogram.

125. ## physics

2. A wooden block slides directly down an inclined plane, at a constant velocity of 6 m/s. a. How large is the coefficient of kinetic friction if the plane makes an angle of 25º with the horizontal? 0.466 b. If the angle of incline is changed to 10º, how

Lightning electronics charges \$9.98 plus 0.75 per pound to ship electronic purchases. Write and solve an equation to find the weight in pounds of a dvd player for which the shipping charge is \$18.23. I thin k it is 9.98 +.75p = 18.23 the answer being

127. ## Physics

Any help is appreciated! A grandfather clock is based on the period of oscillation of a pendulum. The clock keeps perfect time on the first floor of the Sears tower but when carefully moved to the top floor h=436 m above the surface of the earth, the clock

128. ## Physics- Fluids

Please help! Any advice is appreciated A water faucet in a house is h=8 m below the water surface in the local water tower. The radius of the orifice in the fully opened faucet is r=0.01 m. We assume non-viscous flow in this problem. a) How long does it

129. ## Math

A car travels 540 hours om 45L. of gasoline.How far can it travels on 60L. of gasoline?

130. ## english

we did not grow rice voice

131. ## math

the position of a car in time t (in hours) is (-10+45t,40+70t) and a truck (40-40t,20+75t) find the distance between the car and the truck at time t=0 in km) i have 53.9km to 1dp find an expression for d^2 in terms of t) I have 7250t^2 -8700t+290 Complete

132. ## Math

You want to buy three books that are on sale at 20% off. The original prices of the books are \$2.50, \$4.95, and \$6.00. How much will you save?

133. ## Science chemistry

Determine the number of moles of oxygen in 1 mol of dinitrogen tetraoxide N2O4= N 2×14.01g/mol= 28.02g/mol O 4×16.00g/mol= 64.00g/mol N2O4= 92.02g/mol I can't get the right formula to solve the rest. Please help and thank you

134. ## michelle

An object moving vertically is at the given heights at the specified times. Find the position equation s = at2 + v0t + s0 for the object given the following conditions. • At t = 1 seconds, s = 48 feet • At t = 2 seconds, s = 64 feet • At t = 3

135. ## precalculus

Write the form of the partial fraction decomposition of the rational expression. 1/9x^2-4

136. ## pre calculus

Use Gaussian elimination to write the system of equations given below in row-echelon form. 2x+4y+z=-4 2x-4y+6z=13 4x-2y+z=6

137. ## chem

A sample of oxygen at 32◦C occupies 340 mL. If this sample later occupies 1064 mL at 57◦C and 1.2 atm, what was its original pressure?

138. ## Algebra

Two number cubes have sides numbered 1-6. If both cubes are rolled at the same time, what is the probability that the numbers on both cubes will be greater than 3?

139. ## Engineering science

A steel cylinder contains an ideal gas at 27°C. The gauge pressure is 140kPa. If the temperature of the container increases to 79°C, what is the new gauge pressure?

140. ## Physics

Gas is confined in a tank at a pressure of 11.0 atm and a temperature of 25.0 degrees C. If two-thirds of the gas is withdrawn and the temperature is raised to 75.0 degrees C, what is the new pressure of the gas remaining in the tank? Please help!

141. ## physics

Suppose a river flows due south with a speed of 2.0 m/s. Given that speed of motorboat relative to water is 4.2 m/s due east. (a) In what direction should the motorboat head to reach a point on the opposite bank directly east from your starting point? (b)

142. ## Physics

Please help! Any advice is appreciated A water faucet in a house is h=8 m below the water surface in the local water tower. The radius of the orifice in the fully opened faucet is r=0.01 m. We assume non-viscous flow in this problem. a) How long does it

143. ## Algebra

Bob is making sandwiches for a school picnic. He is making these types: ham, cheese, and turkey. So far, he has made 12 ham sandwiches, 20 turkey, and 4 cheese. What combination can he make so that exactly 1/5 of the sandwiches are cheese?

144. ## Chemistry 1

Which shows equilibrium between solute and solvent? I'm stumped. a. 2 M CaCl2 b. 1 g Na2CO3 & 100 mL H2O c. 2 mL methanol & 4 mL hexane d. 1 mL H2O & 3 mL ethanol

145. ## math

Water weighs about 8 pounds per gallon

146. ## math

Joan babysits for 6 dollars per hour.

147. ## Math -Calculus

Hi, I need help with the problem: "Use a definite integral to find the area of the region under the curve y=6-4x^2 and above the x-axis". I keep getting stuck at 6x-(4x^3/3). Thanks!!

148. ## Math

The sum of two numbers is 3.What is the maximum value of the product of the first and the square of the second?

149. ## math

Find five rational numbers between - 3/5 and - 1/2

150. ## math

How much money will amount on ₹ 560 in 3 years at the rate 4% per annum

151. ## Math

Elena has 15 more dimes than nickels. If she has \$2.55, how many nickels does she have?

152. ## physics

calculate the volume in cubic centimeters and area in square millimeters of a spherical bacterium of diameter 2.0um. model the bacteria is spheres

153. ## English

What are some personality and physical characteristics of coyotes?

154. ## math

1/2 of a class play soccer, 1/4 of the team are girls, what fraction represents how many girls on the team

155. ## ss

opponents of the national bank relied on which idea to bolster their arguments? A. states' rights B. suffrage C. federalism D. expansionism i choose A, but i think i'm wrong

156. ## Math

How many bricks of size 20cm×10cm×5cm are required to Build the wall leaving 10%of the space for the cement work?

CCA Unit 4 Lesson 11 3. If a number is not a rational number, then it is ______. ~ an integer ~ and irrational number*** ~ a whole number ~ a radical 4. James attached a diagonal brace across a rectangular frame that measures 6 feet by 8 feet. What is the

asked by A Girly Girl :)
158. ## Integral Calculus

Volume of the area bounded by y=sin(x), x-axis, x is greater than or equal to 0 but less than or equal to pi, revolved about x=3pi/2.

159. ## Math

1. Suppose y varies directly with x and, y=15 and x=5. Write a direct variation equation that relates x and y. What is the value of y when x=9? I need a little help on how to figure out how to write this out. Any help will be appreciated. Thank you

160. ## Physics

A ship is heading North at 15 km/h in a tide moving a 6 km/h westward. Determine the magnitude and direction of the resultant velocity of the ship.

161. ## Maths

The numerator of a fraction is 4 less than its denominator if the numerator is decreased by 7 the fraction becomes 2/3. Find the fraction?

Determine the number of moles of oxygen in 1 mol of dinitrogen tetraoxide

163. ## e

Find the area of a parallelogram with sides of length 6 and 8, and with an interior angle with measure \$45^\circ\$.

164. ## Math

Evaluate the expression when a = 6. a-24 A.-30*** B.-18 C.18 D.22

165. ## Chemistry

calculate the volume needed to make 2.20 x 10^2 ml of 0.100M cacl2. what would be the total concentration of the final (Cl-) alone?

166. ## math

Complete the statement. Round to the nearest hundredth if necessary. 3 pt =？ c

167. ## Math

In the triangle ABC, AC=2cm, AB=x cm and angle ABC=π/2 rad. 1. Given that angle BAC=ϴ rad, and that ϴ is a sufficiently small angle, show that x≈ a + bϴ^2, where a and b are constants to be determined. 2. For this part, ϴ is not assumed to be a

168. ## science

1.A scientific law A)can have only one known exception B)can have any number of exceptions as long as we know about them C)might have many exceptions we don’t know about D)has no exceptions*** 2.Sunspots are A) solar storms that can interfere with

169. ## geometry

what are the step to find the volume of an aquarium in cubic feet when its height is 25 1/2 inches and its radius 21 inches?

170. ## Calculus

Which of the following functions does not satisfy the conditions of the Mean Value Theorem on the interval [-1, 1]? a. 5th root of x b. 2x arccosx c. x/(x - 3) d. sqrt(x + 1)

171. ## English

Prewriting can be helpful when trying to narrow a topic because it A. can reveal an interesting angle that may become your thesis. B. can usually be submitted as the final essay. C. helps you eliminate ideas that would support your thesis. D. raises a lot

172. ## english

The final section of a research paper paragraph should include _______, to help readers figure out how the evidence supplied in the body of the paragraph supports the topic. A. an analysis B. a transition C. a citation D. a quotation C?

173. ## Calculus AB

Please help me with this WS 1) Find the value of lim as x-->-(square root of 3) of (-x^4 + 5x^2 -6)/(x+(square root of 3) 2) Find the distance between the discontinuities of g(x)= ((square root of x-4))/(x^2 -5x -1) 3)Find the value of x at which the curve

174. ## math

Find the initial amount given an exponential function. Given the equation y = 24(0.77)^t, what is the initial amount? To find the initial amount, I need to replace t with 0. When I do that, I get y = 24(0.77)^0 which is y = 24(1), so y = 24 In doing other

175. ## AP Bio

When pure-breeding red cows are bred with pure breeding white cows, the offspring are roan. The roan cows also have a gene for horn vs. hornless cattle. The allele for horns dominates the allele for hornless. If a bull and cow are heterozygous for both

176. ## geometry

once you find the voume in cubic inches, how do you convert to cubic feet?

177. ## Math

Find all solutions of the equation cot(theta)+1=0 through the interval [0,2pie).

178. ## science

Take 1mL of 1M NaCl solution, and add 9mL of water. Then take 10microL of the diluted solution and add 40microL of water. What is the dilution? And what is the final concentration of NaCl? So I see how this is a 2:1 dilution, but I am having a hard time

I'm not getting what my teacher means by this question: What would constitute an ideal form of gov. in the U.S and how would this help to shape our country more in a positive light?

180. ## Physics

Do you think that power generated by the electric company means the same thing as the power as explained in this lesson (meaning work over time)? Why or why not? My teacher gave a hint to "Think about each in terms of the amount of work done" Please help!

181. ## MATHS

PARTS OF A POLE WERE PAINTED RED,BLUE AND YELLOW.3/5 OF THE POLE WS RED AND 7/8 WAS BLUE.WHAT PART WAS PAINTED YELLOW?

182. ## history

Texas decreasing population in the late 1790s, gave the Spanish a reason to _____________

183. ## Physics

You set up a ramp with a length of 1.15 m, raising one end to a height of 0.4 m. You then roll a 0.300 kg toy car down the ramp, starting at rest a)What is the change in potential energy of the toy car rolling down this ramp? b)If all of that energy is

184. ## physics

A particle of mass 1kg moving with initial velocity (i+2k)m/s is acted upon by a constant force(i+2j-2k)N,calculate the velocity and distance after 5s.

185. ## math

i need help with a problem wanting me to explain the differences between silver and gold using the terms atom and elements

186. ## art

Could you please check my answer please...thank you Which of the following is the best evaluation of the artwork based on the criterion that the piece feature imaginary creatures or things. 1. The artwork is successful because it features a fully clothed

187. ## English

If you had read The Last Judgement could you please help me? God...."The fifth and sixth people were an old married couple;he finished them off with an axe and found practically no money, although they had more than twent thousand hidden away." Kugler

188. ## Math

One half of a number plus three is eighteen. Find the number

189. ## Math

What is 105/2.1

190. ## Math

Joshua went on shopping spree. He bought a backpack,7 notebooks,4 games and a clock. The backpack cost \$16.00, the notebooks cost \$9.40 each the games cost \$15 each and the clock cost \$24.00. How much money did he spend?

191. ## Language Arts

Read the following lines from Sunjata. God is with the just. Everybody does what he wants, But God makes the final decision. The chick destined to be a rooster will eventually crow, No matter what is laid in its path. It will overcome. Which would BEST

192. ## physics

Suppose Captain Marvel leaps from the top of a 20 m tall building. If his initial speed is 12 m/s, then what is his speed just before he lands on the ground?

193. ## Chemistry

2SO2(g]+O2(g]⇌2SO3(g] ,4 conditions by which concentration of SO3 can be increased I need the answer for my exam i would be thankful if anyone answered it THANK YOU

194. ## Math: Creating a linear equation

Alex has been offered \$50 to accept the job, plus, \$13 per hour. Alex claims he will complete the job in 7 hours. How would you write this as a linear equation in the form of: c = mt + b if c is the cost and t is the time, m is the slope, and b is the

195. ## Pre-Calculus

Convert to rectangular: theta=2pi/3

196. ## Super Hard Math

What multiplication fact can be found by using the arrays 2 times 9 and 5 times 9

197. ## Science

Derive an expression for kinetic energy of an object mass m moving with uniform velcoity v what happens to the kinetic energy of a body if its velcoity is halved?

198. ## Science, physics

A ship is heading north at 15km/h in a tide moving at 6km/h westward. Determine the magnitude and direction of the resultant velocity of the ship. I can't answer it because I don't get the formula. And please give me the formula. I need the answer later.

199. ## college algebra

James can detail a car​ by himself in 60 minutes. Manny does the same job in 55 minutes. How long will it take them to detail a car working together

200. ## Science Physics

Derive an expression for kinetic energy of an object mass m moving with uniform velcoity v what happens to the kinetic energy of a body if its velcoity is halved

201. ## biology help

The features listed above describe what type of cell? Unicellular Has a cell wall May have flagella Single chromosome Ribosomes for protein synthesis

202. ## social studies

Who built the Great Wall of China? I think a Qin emperor

203. ## Physics

Derive an expression for kinetic energy of an object mass m moving with uniform velcoity v what happens to the kinetic energy of a body if its velcoity is halved?

204. ## College alegbra

A rancher wants to create a fence enclosing 1500 m2 of land. The plot will be divided into two equal areas by an additional fence parallel to two sides as shown in the diagram below. Find the dimensions of the plot which results in using the least amount

205. ## Math

My younger sister needs help with this problem: You have an 8 inch stack of dimes, each dimes is a half inch, how many dimes are there? I know the answer is 17, but I need to help her show her work

206. ## Math

There are 12 more girls than boys in the class. 35 % of the class are boys. How many pupils are there in the class?

207. ## math ( plane)

find the equation of the plane passes through the middle point of the join of the points (2,-3,1) and (4,5,-3) and is perpendicular to the line joning the points?

208. ## Math

A customer's bill for maintenance and repair at a service station showed 6 quarts of oil at \$1.15 each an air filter at \$3.75 an oil filter at \$7.45 13 gallons of gasoline at \$1.15 a gallon and 3 hours labor at \$37.00 an hour What was the total bill?

209. ## Math

A car rental agency charges \$44.12 per day plus mile for a certain type of car How much is the rental charge for a 3 days trip of 605 miles?

210. ## math

the cost of banana is Re.1 more than that of an orange. Mr asad purchased 12 bananas and 20 oranges . if he paid Rs.108 to the fruit saller, find the price of a banana and orange.

211. ## Science

If you place a grape in a large amount of sugar water, what will happen to it and why?

212. ## order pair and relations

Henry is building a fence in his backyard for his new puppy. he has 36 feet of fencing and wants a fence in a rectangular area. what is one set of whole number dimension of the fenced in area?

213. ## math

how many sets of 4 are there in sets of 24?

214. ## English

Explain what the speaker's word choice shows us about puritans. " let us hope, to symbolize some sweet moral blossom that maybe found along the track, or relieve the darking close of a tale of human frailty and sorrow." From the scarlet letter chapter 1

215. ## Physics

A 4.05 x 10-2-kg block is resting on a horizontal frictionless surface and is attached to a horizontal spring whose spring constant is 121 N/m. The block is shoved parallel to the spring axis and is given an initial speed of 8.65 m/s, while the spring is

216. ## Math

Ok so in class this is what our teacher had us do.... 1.Pick a number to represent the number of times you would like to have chocolate in a week (more than once, but less than 10 times). 2.Double this amount (just to be bold). 3.Add 5. 4.Multiply the

217. ## Math: Creating a linear equation

Cooper claims he has already completed the job and is offered \$141 as a one time payment. you have to write this as c = mt + b if c is the cost, m is the slope, t is the time(hours) and b is y-intercept!!! PLEASE HELP!

218. ## Science physics

A ship is heading north at 15km/h in a tide moving at 6km/h westward. Determine the magnitude and direction of the resultant velocity of the ship.

219. ## math

what is square root of 54 x 3 x i.

220. ## Science

The lung is to the respiratory system as the ____ is to the integumentary system. A) heart B) kidney C)hand D)brain B

221. ## Math

0.23 decimal as a fraction.

222. ## precalculus

When using Gaussian elimination to solve a system of linear equations, explain how you can recognize that the system has no solution. Give an example that illustrates your answer.

223. ## Algebra

A taxi charges 1.80 per mile with an initial fee of 12.00 how far can you go with 50.00

224. ## Portions and integers

I need help please. Mercury is a metal that is liquid at room temperature. Its melting point of -39 degrees Celsius. The melting point of isopropyl alcohol is -89 Celsius. (Part A) In the context of this problem, what does zero mean ? (I think it just